<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
        <el-row>
            <el-col :span=8>
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                    <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                </el-input>
            </el-col>
            <el-col :span=4>
                <el-button type="primary" @click="goAddPage">添加商品</el-button>
            </el-col>
        </el-row>

        <!-- 表格区 -->
        <el-table :data="goodsList" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格" prop="goods_price" width="75px"></el-table-column>
            <el-table-column label="商品重量" prop="goods_weight" width="45px"></el-table-column>
            <el-table-column label="创建事件" prop="add_time" width="140px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dataFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作">
                <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.goods_id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeGoodById(scope.row.goods_id)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
    </el-card>

    <!-- 分页区 -->
    <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 20, 25]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total" background>
    </el-pagination>

    <!-- 修改商品的对话框 -->
        <el-dialog
        title="修改用户"
        :visible.sync="goodsDialogVisible"
        width="50%"
        >
        <el-form :model="goodsForm" :rules="goodsFormRules" ref="goodsFormRef" label-width="100px" >
            <el-form-item label="商品名称">
                <el-input v-model="goodsForm.goods_name" ></el-input>
            </el-form-item>
            <el-form-item label="商品价格">
                <el-input v-model="goodsForm.goods_price" ></el-input>
            </el-form-item>
            <el-form-item label="商品重量">
                <el-input v-model="goodsForm.goods_weight" ></el-input>
            </el-form-item>
        </el-form>
        <!-- 页脚 -->
        <span slot="footer" class="dialog-footer">
        <el-button @click="goodsDialogVisible = false" @close='goodsDialogClosed'>取 消</el-button>
        <el-button type="primary" @click="editGoodsInfo">确 定</el-button>
        </span>
        </el-dialog>
  </div>
</template>

<script>
export default {
    data() {
        return {
            //商品列表
            goodsList:[],
            //查询参数
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:10
            },
            //总数据条数
            total:0,
            //控制对话框展示
            goodsDialogVisible:false,
            //查询到的商品信息
            goodsForm:{},
            //验证规则
            goodsFormRules:{}
        }
    },
    created() {
        this.getGoodsList()
    },
    methods: {
        //获取商品数据
        async getGoodsList(){
            const {data:res}=await this.$http.get('goods',{params:this.queryInfo})
            
            if(res.meta.status!==200)
                return this.$message.error('获取商品失败')
            
            this.goodsList=res.data.goods
            this.total=res.data.total
        },
        //页面大小发生变化
        handleSizeChange(newSize){
            this.queryInfo.pagesize=newSize
            this.getGoodsList()
        },
        //页码发生变化
        handleCurrentChange(newPage){
            this.queryInfo.pagenum=newPage
            this.getGoodsList()
        },
         //根据ID删除商品
        async removeGoodById(id){
            const confirmResult=await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err => err)
            if(confirmResult !=='confirm'){
                return this.$message.info('已经取消删除')
            }

            const {data:res}= await this.$http.delete(`goods/${id}`)
            if(res.meta.status !==200) return this.$message.error('删除商品失败')
            this.$message.success('删除商品成功')
            this.getGoodsList()
        },
        //跳转添加页面
        goAddPage(){
            this.$router.push('/goods/add')
        },
        //展示修改商品对话框
        async showEditDialog(id){
            const {data :res} = await this.$http.get('goods/'+id)
            if(res.meta.status!==200) {return this.$message.error('查询商品信息失败')}
            this.goodsForm =res.data
            console.log(res.data)
            this.goodsDialogVisible=true
        },
        //对话框关闭事件
        goodsDialogClosed(){
            this.$refs.goodsFormRef.resetFields()
        },
        //修改商品信息
         editGoodsInfo(){
            this.$refs.goodsFormRef.validate(async valid=>{
                if(!valid) return
                //发起修改用户信息请求
                const {data:res}=await this.$http.put('goods/'+this.goodsForm.goods_id,this.goodsForm)
                if(res.meta.status!==200) return this.$message.error('修改失败')
                //关闭对话框
                this.goodsDialogVisible=false
                //刷洗数据列表
                this.getGoodsList()
                //提示修改成功
                this.$message.success('修改成功')
            })
        },
    },
}
</script>

<style lang="less" scoped>
.el-col{
    margin-right: 15px;
}
</style>